30 FPS.... 120 FPS.... 30 FPS. What is happening?

30 FPS.... 120 FPS.... 30 FPS. What is happening?

Yeah the titel already tells you what my problem is. When I play LoL i either have 30 FPS on lowest graphics, 60 FPS on highest or 120 FPS on highest. Of course it is awesome with 120 FPS on highest settings, but it is frustrating with 30-10 FPS on the lowest settings.

Sadly i have no idea what it is that changes my FPS. My Computer settings appear to have nothing to do with it since it is a random but reproduceable event that suddenly happens.

Did anyone have a similar problem and may be able to help me? I would be really thankful.

Yeah the titel already tells you what my problem is. When I play LoL i either have 30 FPS on lowest graphics, 60 FPS on highest or 120 FPS on highest. Of course it is awesome with 120 FPS on highest settings, but it is frustrating with 30-10 FPS on the lowest settings.

Sadly i have no idea what it is that changes my FPS. My Computer settings appear to have nothing to do with it since it is a random but reproduceable event that suddenly happens.

Did anyone have a similar problem and may be able to help me? I would be really thankful.